var rotateLeft = function (lValue, iShiftBits) {
	return (lValue << iShiftBits) | (lValue >>> (32 - iShiftBits))
}

var addUnsigned = function (lX, lY) {
	var lX4, lY4, lX8, lY8, lResult
	lX8 = (lX & 0x80000000)
	lY8 = (lY & 0x80000000)
	lX4 = (lX & 0x40000000)
	lY4 = (lY & 0x40000000)
	lResult = (lX & 0x3FFFFFFF) + (lY & 0x3FFFFFFF)
	if (lX4 & lY4) return (lResult ^ 0x80000000 ^ lX8 ^ lY8)
	if (lX4 | lY4) {
		if (lResult & 0x40000000) return (lResult ^ 0xC0000000 ^ lX8 ^ lY8)
		else return (lResult ^ 0x40000000 ^ lX8 ^ lY8)
	} else {
		return (lResult ^ lX8 ^ lY8)
	}
}

var F = function (x, y, z) {
	return (x & y) | ((~x) & z)
}

var G = function (x, y, z) {
	return (x & z) | (y & (~z))
}

var H = function (x, y, z) {
	return (x ^ y ^ z)
}

var I = function (x, y, z) {
	return (y ^ (x | (~z)))
}

var FF = function (a, b, c, d, x, s, ac) {
	a = addUnsigned(a, addUnsigned(addUnsigned(F(b, c, d), x), ac))
	return addUnsigned(rotateLeft(a, s), b)
}

var GG = function (a, b, c, d, x, s, ac) {
	a = addUnsigned(a, addUnsigned(addUnsigned(G(b, c, d), x), ac))
	return addUnsigned(rotateLeft(a, s), b)
}

var HH = function (a, b, c, d, x, s, ac) {
	a = addUnsigned(a, addUnsigned(addUnsigned(H(b, c, d), x), ac))
	return addUnsigned(rotateLeft(a, s), b)
}

var II = function (a, b, c, d, x, s, ac) {
	a = addUnsigned(a, addUnsigned(addUnsigned(I(b, c, d), x), ac))
	return addUnsigned(rotateLeft(a, s), b)
}

var convertToWordArray = function (string) {
	var lWordCount
	var lMessageLength = string.length
	var lNumberOfWordsTempOne = lMessageLength + 8
	var lNumberOfWordsTempTwo = (lNumberOfWordsTempOne - (lNumberOfWordsTempOne % 64)) / 64
	var lNumberOfWords = (lNumberOfWordsTempTwo + 1) * 16
	var lWordArray = Array(lNumberOfWords - 1)
	var lBytePosition = 0
	var lByteCount = 0
	while (lByteCount < lMessageLength) {
		lWordCount = (lByteCount - (lByteCount % 4)) / 4
		lBytePosition = (lByteCount % 4) * 8
		lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount) << lBytePosition))
		lByteCount++
	}
	lWordCount = (lByteCount - (lByteCount % 4)) / 4
	lBytePosition = (lByteCount % 4) * 8
	lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80 << lBytePosition)
	lWordArray[lNumberOfWords - 2] = lMessageLength << 3
	lWordArray[lNumberOfWords - 1] = lMessageLength >>> 29
	return lWordArray
}

var wordToHex = function (lValue) {
	var WordToHexValue = ''
		var WordToHexValueTemp = ''
		var lByte; var lCount
	for (lCount = 0; lCount <= 3; lCount++) {
		lByte = (lValue >>> (lCount * 8)) & 255
		WordToHexValueTemp = '0' + lByte.toString(16)
		WordToHexValue = WordToHexValue + WordToHexValueTemp.substr(WordToHexValueTemp.length - 2, 2)
	}
	return WordToHexValue
}

var uTF8Encode = function (string) {
	string = string.replace(/\x0d\x0a/g, '\x0a')
	var output = ''
	for (var n = 0; n < string.length; n++) {
		var c = string.charCodeAt(n)
		if (c < 128) {
			output += String.fromCharCode(c)
		} else if ((c > 127) && (c < 2048)) {
			output += String.fromCharCode((c >> 6) | 192)
			output += String.fromCharCode((c & 63) | 128)
		} else {
			output += String.fromCharCode((c >> 12) | 224)
			output += String.fromCharCode(((c >> 6) & 63) | 128)
			output += String.fromCharCode((c & 63) | 128)
		}
	}
	return output
}

function md5 (string) {
	string = string + ''
	var x = Array()
	var k, AA, BB, CC, DD, a, b, c, d
	var S11 = 7
		var S12 = 12
		var S13 = 17
		var S14 = 22
	var S21 = 5
		var S22 = 9
		var S23 = 14
		var S24 = 20
	var S31 = 4
		var S32 = 11
		var S33 = 16
		var S34 = 23
	var S41 = 6
		var S42 = 10
		var S43 = 15
		var S44 = 21
	string = uTF8Encode(string)
	x = convertToWordArray(string)
	a = 0x67452301
	b = 0xEFCDAB89
	c = 0x98BADCFE
	d = 0x10325476
	for (k = 0; k < x.length; k += 16) {
		AA = a
		BB = b
		CC = c
		DD = d
		a = FF(a, b, c, d, x[k + 0], S11, 0xD76AA478)
		d = FF(d, a, b, c, x[k + 1], S12, 0xE8C7B756)
		c = FF(c, d, a, b, x[k + 2], S13, 0x242070DB)
		b = FF(b, c, d, a, x[k + 3], S14, 0xC1BDCEEE)
		a = FF(a, b, c, d, x[k + 4], S11, 0xF57C0FAF)
		d = FF(d, a, b, c, x[k + 5], S12, 0x4787C62A)
		c = FF(c, d, a, b, x[k + 6], S13, 0xA8304613)
		b = FF(b, c, d, a, x[k + 7], S14, 0xFD469501)
		a = FF(a, b, c, d, x[k + 8], S11, 0x698098D8)
		d = FF(d, a, b, c, x[k + 9], S12, 0x8B44F7AF)
		c = FF(c, d, a, b, x[k + 10], S13, 0xFFFF5BB1)
		b = FF(b, c, d, a, x[k + 11], S14, 0x895CD7BE)
		a = FF(a, b, c, d, x[k + 12], S11, 0x6B901122)
		d = FF(d, a, b, c, x[k + 13], S12, 0xFD987193)
		c = FF(c, d, a, b, x[k + 14], S13, 0xA679438E)
		b = FF(b, c, d, a, x[k + 15], S14, 0x49B40821)
		a = GG(a, b, c, d, x[k + 1], S21, 0xF61E2562)
		d = GG(d, a, b, c, x[k + 6], S22, 0xC040B340)
		c = GG(c, d, a, b, x[k + 11], S23, 0x265E5A51)
		b = GG(b, c, d, a, x[k + 0], S24, 0xE9B6C7AA)
		a = GG(a, b, c, d, x[k + 5], S21, 0xD62F105D)
		d = GG(d, a, b, c, x[k + 10], S22, 0x2441453)
		c = GG(c, d, a, b, x[k + 15], S23, 0xD8A1E681)
		b = GG(b, c, d, a, x[k + 4], S24, 0xE7D3FBC8)
		a = GG(a, b, c, d, x[k + 9], S21, 0x21E1CDE6)
		d = GG(d, a, b, c, x[k + 14], S22, 0xC33707D6)
		c = GG(c, d, a, b, x[k + 3], S23, 0xF4D50D87)
		b = GG(b, c, d, a, x[k + 8], S24, 0x455A14ED)
		a = GG(a, b, c, d, x[k + 13], S21, 0xA9E3E905)
		d = GG(d, a, b, c, x[k + 2], S22, 0xFCEFA3F8)
		c = GG(c, d, a, b, x[k + 7], S23, 0x676F02D9)
		b = GG(b, c, d, a, x[k + 12], S24, 0x8D2A4C8A)
		a = HH(a, b, c, d, x[k + 5], S31, 0xFFFA3942)
		d = HH(d, a, b, c, x[k + 8], S32, 0x8771F681)
		c = HH(c, d, a, b, x[k + 11], S33, 0x6D9D6122)
		b = HH(b, c, d, a, x[k + 14], S34, 0xFDE5380C)
		a = HH(a, b, c, d, x[k + 1], S31, 0xA4BEEA44)
		d = HH(d, a, b, c, x[k + 4], S32, 0x4BDECFA9)
		c = HH(c, d, a, b, x[k + 7], S33, 0xF6BB4B60)
		b = HH(b, c, d, a, x[k + 10], S34, 0xBEBFBC70)
		a = HH(a, b, c, d, x[k + 13], S31, 0x289B7EC6)
		d = HH(d, a, b, c, x[k + 0], S32, 0xEAA127FA)
		c = HH(c, d, a, b, x[k + 3], S33, 0xD4EF3085)
		b = HH(b, c, d, a, x[k + 6], S34, 0x4881D05)
		a = HH(a, b, c, d, x[k + 9], S31, 0xD9D4D039)
		d = HH(d, a, b, c, x[k + 12], S32, 0xE6DB99E5)
		c = HH(c, d, a, b, x[k + 15], S33, 0x1FA27CF8)
		b = HH(b, c, d, a, x[k + 2], S34, 0xC4AC5665)
		a = II(a, b, c, d, x[k + 0], S41, 0xF4292244)
		d = II(d, a, b, c, x[k + 7], S42, 0x432AFF97)
		c = II(c, d, a, b, x[k + 14], S43, 0xAB9423A7)
		b = II(b, c, d, a, x[k + 5], S44, 0xFC93A039)
		a = II(a, b, c, d, x[k + 12], S41, 0x655B59C3)
		d = II(d, a, b, c, x[k + 3], S42, 0x8F0CCC92)
		c = II(c, d, a, b, x[k + 10], S43, 0xFFEFF47D)
		b = II(b, c, d, a, x[k + 1], S44, 0x85845DD1)
		a = II(a, b, c, d, x[k + 8], S41, 0x6FA87E4F)
		d = II(d, a, b, c, x[k + 15], S42, 0xFE2CE6E0)
		c = II(c, d, a, b, x[k + 6], S43, 0xA3014314)
		b = II(b, c, d, a, x[k + 13], S44, 0x4E0811A1)
		a = II(a, b, c, d, x[k + 4], S41, 0xF7537E82)
		d = II(d, a, b, c, x[k + 11], S42, 0xBD3AF235)
		c = II(c, d, a, b, x[k + 2], S43, 0x2AD7D2BB)
		b = II(b, c, d, a, x[k + 9], S44, 0xEB86D391)
		a = addUnsigned(a, AA)
		b = addUnsigned(b, BB)
		c = addUnsigned(c, CC)
		d = addUnsigned(d, DD)
	}
	var tempValue = wordToHex(a) + wordToHex(b) + wordToHex(c) + wordToHex(d)
	return tempValue.toLowerCase()
}

export default md5
